body, html
 line-height: 1
 font-weight: 200
 font-family: 'PingFang SC', 'STHeitiSC-Light', 'Helvetica-Light',arial, sans-serif


.clearfix
	display: inline-block
	&:after
		display: block
		content: '.'
		height: 0
		line-height: 0
		clear: both
		visibility: hidden

@media (-webkit-min-device-pixel-radio: 1.5),(min-device-pixel-radio: 1.5)
	.border-1px
		&::after
			-webkit-transform: scaleY(0.7)
			transform:scleY(0.7)
			
@media (-webkit-min-device-pixel-radio: 2),(min-device-pixel-radio: 2)
	.border-1px
		&::after
			-webkit-transform: scaleY(0.5)
			transform:scleY(0.5)